Home / 21,233.16-31,811.58-11,862

Finding the Fourth Proportional to 21,233.16, 31,811.58 and 11,862

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Solution

The fourth proportional to 21,233.16, 31,811.58 and 11,862 is: 17,771.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.16 : 31,811.58 = 11,862 : x
  2. Step 2: Convert to fraction form
    21,233.16/31,811.58 = 11,862/x
  3. Step 3: Cross multiply
    21,233.16x = 31,811.58 × 11,862
  4. Step 4: Simplify right side
    21,233.16x = 377,348,961.96
  5. Step 5: Solve for x
    x = 377,348,961.96/21,233.16
  6. Step 6: Final answer
    x = 17,771.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.